Unitary transmission and pump for motor-driven fire engines



July 31, 1923. 1,463,569

c. E. BATHRICK UNITARY TRANSMISSION AND PUMP FOR MOTOR DRIVEN FIRE ENGINES Filed Dec. 5, 1919 2 Sheets-Sheet' Ill/I K firm/swan Juil 31, 1923. f 1,463,569

C. E. BATHRICK UNITARY TRANSMISS ION AND PUMP FOR MOTOR bRIVEN FIRE ENGINES Filed Deb. s, 1919 Z-SheetS-Sheet 2 Patented July 31, 1923.

UNlTED it I 1,463,569 PATENT OFFICE.

CHARLES E. BATHRIGK, OF SOUTH BEND, INDIANA, ASSIGNOR TO SOUTH BEND MOTORS COMPANY, OF SOUTH BEND, INDIANA.

UNITARY TRANSMISSION AND PUMP FOR MOTOR-DRIVEN FIRE ENGINES.

Application filed December 3, 1919. Serial No. 342,283. a

To all whom if may concern: I

Be it known that I, CHARLES E. BATHRICK, a citizen of the United States, residing at South Bench-in the county of St. Joseph and I State of Indiana, have invented certain new and useful I'm rovements in Unitary Transmissionsv and umps for Motor-Driven Fire Engines, of which the following is a specification.

The invention relates to rotary pumps motordriven vehicles of the type used for fire engines and has for its object to provide a pump of this character, wherein the pump is located above the selective gear speed changing mechanism, commonly called the transmission of a motor driven vehicle, and so connected through gearing driven by said change speed mechanism so that the rotary pump may be driven at various Speeds through the change speed mechanism.

A further object is to provide a rotary pump disposed above the transmission mechanism of a motor driven vehicle and at right anglesto the drive shaft of said transmission mechanism, and to provide means whereby the gears forming the connection between the pump and the transmission may be thrown into gear with the transmission drive shaft and the variable speeds obtainable in the transmission imparted to the rotatable element of the pump. Also to rovide means whereby the drive shaft leadlng to the differential of the vehicle will be disconnected from the drive shaft of the transmission 35- when the gear driving means for the pump is thrown into operation.

A further objectis to provide in combination with the transmission of a motor driven vehicle, a pump, which pump is located above the transmission in a casing secured to the upper side'of the transmission casing. The transmission, its casing and the pump casing being supported by transversely disposed ipes which engage the side rails of the chassis and also form intakes for the With the above and other ob'ects in view the invention resides in the com ination and arrangement of parts as hereinafter set forth, shown in the drawings, described and claimed, it being understoodthat changes in the precise embodiment of the invention may be made within the scope of what is claimed without departing from the spirit of the invention.v

In the drawings Figure 1 is e a transverse sectional view through a motor vehicle chassis, showing the transmission and pump in rear elevation.

Figure 2 is a sectional view takenron line 2-2 of Figure 1, showing the pump casing in elevation. I

Referring-to the drawings, the numeral 1 designates the transmission casing and 2 the main drive shaft-thereof. The drive shaft 05 2 is rotatably mounted in bearings 3 and 4. The bearing 3 supports the driveshaft 2 within the gear 5 carried by the drive shaft 6 which is driven by the engine. Bearing 4 supports the rear end of the drive shaft 2 to within a clutch member 7 of a stub shaft 8 which leads to the drive shaft which drives the differential of the vehicle, said stub shaft 8 being rotatably mounted in bearings 9 in the extension 10 of the casing 1. Constant gear 5 meshes with a constant gear 11 carrie on a counter shaft 12, said constant gears, during the rotation of the drive shaft 6 rotating the counter shaft 12 at all times. However, various speeds are attained by ac shifting the gears 13 and 14 into mesh with gears 15, 16 and 17. gWhen gears 13 and 15 are in mesh a high speed is attained and when gears 14 and 16 are thrown into mesh,

a low gearing is attained. When it is desired to throw the mechanism into a different speed, gear 14 is thrown into mesh with gear 17. It is to be understood that the articular means for shifting the gears may 0 ofany conventional form, also that any conventional form of transmission may be used. 1

Disposed on top of the transmission casing 1 and preferably at right angles thereto is a rotary pump 18, which pump comprises rotatable elements 19 of a conventional form, which elements are rotatably mounted within the casing 20. One of said pump elements is secured to a shaft 21 and is adapted to be rotated thereby. The other element, having its arms interengaging the arms of the first mentioned element as at 22, will be rotated by said rotatable element carried by the shaft 21. Extending outwardly from the sides of the pump 20 are intake pipes 23 which intake pipes extend upward y and outwardly and terminate in horizontal portions 24 which rest upon the side rails 25 of the chassis and form supporting means for the pump and the transmission. The upper tate the pum the revoluble elements 19 within the plu end of the pump casing 20 is provided with a multiple of dischar e pipes 28, to which hose lines may be coup ed as desired.

Pump shaft 21 has secured thereto a gear 27, which gear is adapted to be rotated through an idle ;-ar 28 for rotating the pump elements. hen it is desired to 1'0- elements a slidable gear 29 which is slida 1y mounted on the drive shaft 2 is shifted into mesh with .the idle ear 28. When the slidable gear 29 is shifted its clutch member 30 comes out of-enga ement with the clutch member 7 of the stub s aft 8 thereby preventing the further rotation of the stub shaft 8 and allowing the drive shaft 2, through the medium of the slidable gear 29 to impart revoluble movement to the idle gear 28. The idle gear 28 being-in mesh with the-gear 27 carried by the pump shaft 21 will cause said pump shaft and its revoluble element to rotate according to the speed of rotation of the drive shaft 2. The speed of rotation of the drive shaft 2 being capable of variation through the slidable gears 13- and 14, it will be seen that variable speeds of rotation may be imparted to the revoluble elements within the pump.

From the above it willbe seen that all that will be necessary to do when it is desired to work the pump is for the slidable car 29 to be shifted into enga ement with t e idle gear 28, which action wi' l disconnect the drive shaft 2 of the transmission from the stub shaft 8 which drives the vehicle. Gear 29 being in mesh with the idle gear 28, the variable speeds imparted to the transmission drive shaft 2 by means of the gears within the transmission will be imparted to The invention having been set fort w at is claimed as new and useful is 1. In a transmission and pump assembly supported b the side rails of the motor driven vehic e frame, the combination of a transmission casing longitudinally disposed and having a transmission therein, said transmission casing being disposed below the pump casing andrails of the frame and entirely supported by the rails of the frame,

take pipes, said intake pipes being disposed on the side rails of the motor driven vehicle and entirely supporting the pump casing and the transmission casing.

2, In a transmission casing and pump casing assembl supported by the side ralls of the frame 0 a motor driven vehicle, the combination of a transmission casing longitudidisposed and located below the frame of t e vehicle, transversely disposed intake pipes carried by the pump casing, said pump casing beingdisposed above the transmission casing and secured thereto, said intake pipes of the pump casing extending upwardly and outwardly and overlying the side rails of the vehicle frame and engaging the upper faces thereof and forming means for entirely supporting the transmission and pump caslngs.

3. In a transmission casing and pump casing assembly entirely supported by the side ra1ls of the frame of a motor driven vehicle, the combination of a transmission casing longitudinally disposed and a pump casin" having intake pipes transversely dispose said transmission casing and pum casing being substantially underslung in re ation to the frame and entirely supported by the engagement of the ends of the intake pipes of the pump with the upper faces of the. side rails of the vehicle frame.

4. In a transmission casing and a pump casing assembly entirely supported bythe side rails of the frame of a motor' driven vehicle, said transmission and pump casings being disposed between the side rails and the transmission casin under-slung substantially below the side rails, of supporting means for entirely supporting said casings, said supporting means bein formed by transversely disposed upwardly and outwardly extending intake pipes carried by the pump and secured to the upper sides of the side rails of the vehicle frame.

In testimony whereof I ailix my'siature. 

